Thermo-switchable pressure-sensitive adhesives with strong tunable adhesion towards substrate surfaces of different hydrophilicity

The emulsion polymerization induced self-assembly of a thermoresponsive polymer poly(N-vinylcaprolactam)

“…Studied application fields for PNVCL include its use in drug delivery, [3][4][5][6][7][8][9][10][11] nanoreactors for catalysis, 12,13 enzyme entrapping, 14 dye-affinity chromatography, 15 wastewater treatment, 16 flocculation 17 and thermoswitchable pressure sensitive adhesives. 18,19 A more comprehensive description of possible applications can be found in a recent review by Cortez-Lemus and Licea-Claverie. 20 The first successful controlled polymerizations of N-vinylcaprolactam, NVCL, i.e.…”

Preprogrammed Dynamic Microstructured Polymer Interfaces

“…[92] In a similar fashion, the temperature dependent phase behavior of polymer blends of PEG and PNIPAM was explored to develop thermoswitchable pressure-sensitive adhesives. [93] An interesting approach to switch adhesion on and off is based on the reversible formation of chemical bonds that can be destroyed or restored in response to stimuli. For example, reversible photochemical crosslinking was used to switch adhesion through exposure to a UV light or an elevated temperature by exploring a reversible cycloaddition reaction of anthracenes.…”

Ambient air-operated thermo-switchable adhesion of N-isopropylacrylamide-incorporated pressure sensitive adhesives

“…In order to satisfy this property, it is essential to use functional materials that can rapidly change their properties in response to external stimuli, such as temperature, pH, light, shear, chemical compounds, and electric or magnetic fields. Compared to many known triggers, UV [22][23][24] and thermal [25][26][27][28] stimuli are suitable to achieve a reversible PSA without damaging the substrate materials and further environmental pollution. In particular, the simplicity and accessibility of thermal stimulation make the PSAs capable of switching their adhesion behaviour in response to the temperature, which is an interesting target for facile removal.…”